Fully hand-held tutorial on setting up the Java environment to a usable state as quickly as possible. Only knowledge of using the terminal is expected. This tutorial will be completely self-contained (excluding links to downloads).

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sudo apt install openjdk-17-jdk openjdk-17-doc openjdk-17-source

Verify installation by opening a terminal and typing

java -version

Gradle

We are currently on Gradle 7. We will install it manually for ease of understanding. The official guide is here for reference. (Aside: we do not use the Gradle Wrapper)

• Download the latest Gradle 7 distribution (7.4.2 as of writing).
  • Choose the "complete" version.
  • Remember where you downloaded it.

• Unpack Gradle (the following are excerpted from the gradle website)

  • Open a terminal

  • cd into the directory where you downloaded Gradle. Then

• Excerpt
  Unzip the distribution zip file in the directory of your choosing, e.g.: Code Block $ sudo mkdir /opt/gradle $ sudo unzip -d /opt/gradle gradle-7.4.2-all.zip

• Add to path

  Code Block
  $ echo 'export PATH=$PATH:/opt/gradle/gradle-7.4.2/bin' >> ~/.bashrc

• Verify installation

  Excerpt
  Open a console (or a Windows command prompt) and run gradle -v to run gradle and display the version, e.g.: Code Block $ gradle -v ------------------------------------------------------------ Gradle 7.4.2 ------------------------------------------------------------

• Configure for IHMC software
  
  • Create a gradle.properties file in your user Home directory, ~/.gradle/gradle.properties

  • Copy/paste below into the file

    Code Block
    org.gradle.java.home=/usr/lib/jvm/java-17-openjdk-amd64 org.gradle.jvmargs=-Xmx4g

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• Download IntelliJ Community. 
  • https://www.jetbrains.com/idea/download/#section=linux
  • Open a terminal and cd into the folder where you downloaded the tar file

  • Extract the file and move it to /opt/. (If you already downloaded from the link above, there is no need to run curl). Replace the names appropriately based on the version you download.

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    MultiExcerptName IntellijDesktopLauncher PageWithExcerpt IntelliJ IDEA

• Now you will need to configure IntelliJ to the Java environment you installed.

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Windows

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Git

• Install Git. Use the 64-bit standalone installer
  • https://git-scm.com/download/win

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• Download the latest Gradle 7 distribution (7.4.2 as of writing).
  • Choose the complete version.
  • Remember where you downloaded it.

• Unpack Gradle (the following are excerpted from the gradle website)

  Excerpt
  Create a new directory C:\Gradle with File Explorer. Open a second File Explorer window and go to the directory where the Gradle distribution was downloaded. Double-click the ZIP archive to expose the content. Drag the content folder gradle-7.4.2 to your newly created C:\Gradle folder.

• Add to path

  Excerpt
  In File Explorer right-click on the This PC (or Computer) icon, then click Properties -> Advanced System Settings -> Environmental Variables. Under System Variables select Path, then click Edit. Add an entry for C:\Gradle\gradle-7.4.2\bin. Click OK to save.

• Verify installation

  Excerpt
  Open a console (or a Windows command prompt) and run gradle -v to run gradle and display the version, e.g.: Code Block $ gradle -v ------------------------------------------------------------ Gradle 7.4.2 ------------------------------------------------------------

• Configure for IHMC software
• excerpt from Gradle#Installation
• create gradle.properties file in C:/Users/<user>/.gradle/gradle.properties
• Copy/paste
Code Blockorg.gradle.java.home=C:/Program Files/Java/jdk-17.0.3.1 org.gradle.jvmargs=-Xmx4g


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• Copy paste the following lines into the file

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Import Repositories

Don't forget the long paths thing

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• Download IntelliJ Community. Choose the .exe for convenience
  • https://www.jetbrains.com/idea/download/#section=windows
  • All default installation options are fine.
• Now you will need to configure IntelliJ to the Java environment you installed.

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Usage:

• Upon each launch, IntelliJ will index your files for faster searching. You will need to wait for it to finish before navigating code.